JanSport Big Backpack 34L
- 34 liters, two extra-large compartments
- 15 inch laptop sleeve, padded
- Five pockets incl. side bottle pocket and key clip organizer
- S-curve harness, padded straps and back panel
- Polyester, not water resistant, hand wash only
Last refreshed Sep 9, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A big everyday backpack with two roomy compartments, a padded laptop sleeve and a side bottle pocket. It is not water resistant and care is by hand.
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ASIN: B0FLF5HM1YModel: JS0A47JKA0ACategory: Laptop Backpacks
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Overview
A student or commuter who carries a lot gets two extra-large compartments, a padded laptop section and exterior stash pockets in this JanSport. An S-curve harness and a padded back panel spread the weight across the shoulders.
Large capacity and a padded laptop compartment suit heavy daily loads. The limit is weather and care, since the polyester is not water resistant and washing is by hand only.
Who it's for
College and high school students, plus travelers wanting one large pack, get two big compartments and a laptop sleeve. People carrying light loads, or riding in rain, will want something smaller or weatherproofed.
Pros and cons
- Large two-compartment layout
- Padded laptop sleeve
- Side water bottle pocket
- S-curve padded straps
- Not water resistant
- Hand wash only
- Bulky when only half full
Performance notes
The S-curve harness and padded back panel spread weight over the shoulders and keep the load from digging in. Two main compartments split gear into groups, and the laptop sleeve cushions a device away from the rest.
Specifications
| Brand | JanSport |
|---|---|
| Model | JS0A47JKA0A |
| Dimensions & fit | |
| Compatible Device Size Maximum | 15 inches |
| Item Dimensions D x W x H | 13 x 7.5 x 17 inches (D x W x H) |
| Capacity & performance | |
| Storage Volume | 34 liters |
| Construction & materials | |
| Material Type | Polyester |
| Color | Cherry Lacquer |
| Included components | |
| Backpack Harness Type | S-Curve |
| Other details | |
| Strap Type | Adjustable, handle, shoulder strap |
| Water Resistance Level | Not Water Resistant |
| Number of Compartments | 2 |
| Number Of Pockets | 5 |
| Pocket Description | Keys pocket, side water bottle pocket, stash pocket, utility pocket |
| Product Care Instructions | Hand Wash Only |
Closest rivals on specs
Frequently asked questions
How do I adjust the JanSport Big Backpack straps?
The strap type is adjustable with an S-curve harness, but the listing gives no adjustment steps.
Does it fit a 15 inch laptop?
Yes. The maximum device size is 15 inches and the title names a 15 inch laptop sleeve.
Is the JanSport Big Backpack water resistant?
No. It is listed as not water resistant.